HX620W Corsair HX650W

User Manual: HX620W

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Q&A: Corsair Professional Series HX650W
Why the successor to the HX620W more than lives up to its predecessor’s reputation
The launch of the Corsair Professional Series HX650W signals the end-of-life for the Corsair HX620W, which
was the first PSU that Corsair launched in 2006. The HX620W quickly established the company as a major
player in this sector, thanks to its compelling combination of class-leading performance, matched with build
and component quality that was second to none. It acquired worldwide critical acclaim in the technical press
and set a new standard, by which other power supplies would be judged.
As Corsair makes the transition from the HX620W to the new Professional Series HX650W, we felt that it was
important to explain why we are stopping production of a power supply with such an important and
illustrious history, and to reassure the market that its successor more than lives up to the HX620W’s
reputation – and in fact succeeds it in terms of performance and specifications.

Questions:
Why is the HX650W superior to the HX620W?
The HX650W is based on the same highly-respected platform as the HX620W, but with several key upgrades
to ensure even better performance. This allows the HX650W to generate more power than the HX620W
(650W versus 620W), with more current available on the critical +12V rail (52A / 624W), leading to better
support for today’s multi-core CPUs and 3D graphics cards. The enhanced design of the HX650W also leads
to greater energy-efficiency (80 PLUS BRONZE), which reduces electricity usage and results in less energy
wasted as heat, allowing for quieter cooling. In addition, the HX650W includes a greater number of SATA
power connectors (9 versus 8 on the HX620W), and PCI-E connectors (4 versus 2), enhancing the PSU’s
ability to support the latest enthusiast PC configurations.
The HX650W retains the same premium build quality and component quality ethos as the HX620W, including
up-rated components and 105°C capacitors, and it is tested to the same rigorous quality standards. This
guarantees continuous output at 100% load at an ambient temperature of 50°C, ensuring unflinching
performance even in the most demanding PCs.
Why did we make the transition?
Corsair is committed to providing the highest-quality power supplies on the market. Although the HX620W is
still one of the best-performing PSUs in its segment, we felt the time was right to update the model with
even greater performance, while retaining all the aspects that made the HX620W such a popular and wellrespected power supply.

Is the HX650W a replacement for the HX620W, or its successor?
The HX650W is the successor to the HX620W in every way, since it offers better performance and efficiency.
The updated design provides more power, including a greater amount of power on the critical +12V rail;
higher energy-efficiency contributing to lower temperatures and quieter cooling; a greater number of SATA
and PCI-E connectors; and a longer warranty of 7 years, compared to 5 for the HX620W.

Corsair Professional Series HX650W versus Corsair HX620W – making the best, better.
Corsair Professional
Series HX650W
Total Power

Corsair HX620W

650W

620W

continuous at 50°C

continuous at 50°C

52A (624W)

50A (600W)

+12V
current

HX650W Advantage
A higher power output means better support the
latest PC platforms.
A more powerful +12V rail provides better support
for today’s multi-core processors and graphics cards

80 PLUS Bronze

80 PLUS

(82% or higher)

(80% or higher)

120mm

120mm

thermally-controlled fan

thermally-controlled fan

SATA
connectors

9

8

Higher number of SSDs and other storage devices
supported

PCI-E
connectors

4

2

Better support for high-end, dual-graphics solutions

7 Years

5 Years

Longer warranty reinforces Corsair’s commitment to
superior product quality

Efficiency

Cooling

Warranty

An updated circuit design leads to increased
energy-efficiency, and less heat and noise
Same, low-noise cooling technology, but more
efficient HX650W produces less heat and therefore
benefits from quieter cooling

Corsair Professional Series HX650W Specifications:

Model

CMPSU-650HX

AC INPUT

100-240V ~ 10A 50/60Hz

DC Output

+3.3V

+5V

+12V

-12V

+5Vsb

MAX Current

24A

30A

52A

0.8A

3A

624W

9.6W

15W

170W

Max Combined
Wattage

650W

Corsair Professional Series HX650W Modular Cable Set:
QUANTITY

LENGTH

2
3
2

600mm
700mm
850mm

PCI-E
SATA
PERIPHERAL

CONNECTORS
PER CABLE
2
3
5

TOTAL
CONNECTORS
4
9
10*

* Floppy cable connector is attached to the end of peripheral cable

CMPSU-650HX Efficiency

CMPSU-650HX Noise level

91%
43

89%
38

87%

33
dBA*

Efficiency*

85%
83%

28

81%
115Vac Input
230Vac Input

79%

23

77%
75%
Full (650W)

18

Typical (325W)
System Load

Light (130W)

65W

120W

195W

260W

325W

390W

Wattage

455W

520W

585W

650W



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